Finding the Fourth Proportional to 3,872,761.20, 5,344,479.12 and 2,153,882.52
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Solution
The fourth proportional to 3,872,761.20, 5,344,479.12 and 2,153,882.52 is: 2,972,396.07
Step by Step Solution
- Step 1: Write the proportion equation
3,872,761.20 : 5,344,479.12 = 2,153,882.52 : x - Step 2: Convert to fraction form
3,872,761.20/5,344,479.12 = 2,153,882.52/x - Step 3: Cross multiply
3,872,761.20x = 5,344,479.12 × 2,153,882.52 - Step 4: Simplify right side
3,872,761.20x = 11,511,380,155,072.98 - Step 5: Solve for x
x = 11,511,380,155,072.98/3,872,761.20 - Step 6: Final answer
x = 2,972,396.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.